Book cover cementing machine



A ril 30, 1935. A. s. JOHNSON BOOK COVER CEMENTING MACHINE Filed Sept.8, 1931 2 Sheets-Sheet l m 0/0, 1 g m E [07 will 3U, 1935. A. s. JOHNSONBOOK COVER CEMENTING MACHINE Filed Sept. 8, 1931 2 Sheets-Sheet PatentedApr. 30, 1935 BOQK' CGVEB CEMEN'EING MACHINE Arthur S. Johnson, Beverly,Mass., assignorto United Shoe Machinery Corporation; Paterson, N, 3., acorporation of New Jersey Application September 8, 1931, Serial No.561,636

10 Claims.

This invention relates to cementing machines and is illustrated asembodied in a machine, particularly adapted for applying cement to bookcovers, of the type shown in Letters Patent of the United States, No.iii r9540, granted *March 15, 1932, upon an application filed in thename of ,John W. Cosgrove, deceased.

Before their application to the books, book :covers are commonly made upas cases comprising the cover material a-nd filler pieces, orstiffeners. The cover material is cut larger than the filler pieces and,after cement has been applied tothe margins of the fillers and to theprojecting margins of the covers, the'edges oi the cover material arefolded overthe filler pieces. The problem of applying cementsimultaneously to work pieces which comprise portions of differentthicknesses is satisfactorily accomplished by machines of the typeillustrated in the Cosgrove application in which separate applying rollsare utilized for coating the marginsoi the filler and the cover andinwhich separately driven individually yieldable presser or worksupporting rolls are provided to coact with the respective applyingrolls. In the arrangement there shown, one applying roll. wide enough tocover both margins is brought into contact with the filler piece, and'asecond or auxiliary roll, receiving cement fromthe first roll, isbrought into contact with the margin of the cover. v V V Because of thefact that book coversare not uniform in the margin of the projectingcover material, it is essential that provision be'made for adjustment ofthe second or auxiliary roll with respect to the primary coating roll.One important'feature of thepresent invention resides in an improvedmounting for an auxiliary roll in a machine of the type referred to,permit ting adjustment not only axially of the roll to accommodate bookcovers having different widths of projecting margins of cover material,but also to provide for adjustment toward and away from the work of thisauxiliary rolLpthereby to bring the auxiliary roll into contact with thecover irrespective of its thickness. Still another-adjustment intheillustrated machine provides for relative movement of the auxiliaryand primary coating rolls to vary the distance between said rolls andhencethe, quantity of cement transferred. This allows'the quantity ofcement supplied to the auxiliary roll to be kept uniform in allpositions of adjustment and the two-rolls to be brought into linecontact at the desired separation-"The drive for the illustratedauxiliary roll embodies a universal joint and thus permits the, drivingof said roll without binding and at a uniform speed in all of saidpositions of adjustment, avoiding any wrinkling or stretching of thecover material such as would result from differences in the speeds ofthe two coating rolls.

Still other features of the invention reside in an improved gagemechanism comprising a gage fence overhanging a portion of the work andcoacting with a characteristic feature of the work spaced from the edgethereof, as for example the edge or the filler piece.

These and other features of the invention will be best understood from aconsideration of the following specification taken in connection withthe accompanying drawings, in which Fig. i is a front elevation of themachine; I Fig. 2 is a detail View partly in section of the mounting forthe doctor roll;

Fig. 3 is a perspective View of a book cover which has been coated;

Fig. 4 is an enlarged detail in perspective of the mounting iorthedoctor roll;

Fig. 5 is a side elevation with portions broken away to show thearrangement for driving the various rolls;

Fig. 6 is an enlarged view in perspective'oi the applying and presserrolls; and

Fig. '7 isa vertical section showing the mount- I ing for the transferroll and for one of the presser rolls. v

The arrangement of the machine, comprising as it does a'primary coatingroll iii, an auxiliary coating roll 12; and the coacting presserrolls Mand it, adapts it particularly for coating pieces of work such as thatshown in Fig. 3. This com prises a piece of thin cover material Cand twopieces of thicker filler material'F, superposed on the cover materialand spaced from the edges thereofl -The primary coating roll it] is Wideenough to extend overthe margin A of the cover C and to coat the marginsB of the filler pieces F. The coacting presser roll it is adjusted to aposition such that it will accommodate the combined thicknesses of thecover C and a filler piece F so as thereby to holdthe margin Bin firmcontact with the applying roll iii. On the other hand, the auxiliarycoating roll i2 which receives its coating material from that portion ofthe primary coating roll I8 which is above the-margin A, and hencenotneeded on that .rolLand itself applies the coating to the margin Aextending from the outer edge thereof close up to the edge of thefillerpiece. 1 The corresponding presser roll A i6 grips the thin cover Cbetween itself and the auxiliary roll l2.

Coating material is supplied to the primary roll I5 from a pick-up rollit dipping in a trough 26 which is supplied with cement at a uniformlevel by means of a barometric inverted supply can 22. The quantity ofmaterial taken out of the receptacle 26 by the pick-up roll i8 iscontrolled by a driven doctor roll 2d and the material carried over theupper surface of the pick-up roll it is delivered to a transfer roll 26which in turn delivers it to the coating roll Hi.

All of the rolls which handle coating material are driven in the samedirection as indicated by the arrows in Fig. i. To this end the coatingroll H] is mounted on a shaft 3B joumaled in the frame 32 of the machineand driven by suitable gear connections within the casings 34 and 33from a source of power such as an electric motor 38. The direction ofrotation of the various rolls is indicated by arrows in Fig 1 andsuitable gear connectionsiare provided for rotating these rolls in thedirections indicated so that the peripheral speeds of adjacent rolls areequal. In order that those rolls which are adjustable may be driven inany positionof adjustment without binding, the shafts connecting theadjustable rolls with the gears in the gear case 3% are provided withuniversal joints 5B. is true of the doctor roll 2%, the transfer roll26, the auxiliary roll i2, and the presser rolls M and 5 5. By thisarrangement the pitch relation of driving gears is unchanged byadjustment of the rolls and hence their speed is held at itspredetermined desired value.

The reason for providing universal joints in the shaft of the transferroll 2% lies in the peculiar mounting provided forthis roll. In order toavoid extraordinary care and expense in drilling the frame to receivethe shafts of the rolls it, Hi and 26 so that the periphery of thetransfer roll 26 will make substantially a line contact with each of theadjacent rolls H! and H8 at a separation of only a fewthousandths of aninch, provision is made for adjusting the'roll 26 to take care of anyslight variations resulting from imperfect drilling of the frame ormachining of the rolls. Accordingly, the roll 25 is journaledjin ahanger 42 shaped like a bell crank and pivoted upon a stud G4. The otherarm of the bell crank is slotted to receive a clamping bolt 45 and topermit adjustment a direction substantially normal to the lineconnecting the centers of the rolls l9 and 18. The diameter of thistransfer roll it is greater than the shortest distance between theperipheries of the rolls Ml and i8 and it can, therefore; be broughtinto just the desired'relation to said rolls.

Control of the quantity of material delivered by the pick-up rolll8 isfacilitated by journaling the doctor roll 24 in a sliding block 50(Figs. 2 and 4) which is received within a slideway provided in theframe, providing thus for maintenance of the axes of the rolls 24 and H3in parallelism. The position of the doctor roll 24 may be adjusted bymeans of a micrometer screw 52 which has a shank 54 threaded in thevframe as shown in Fig. 4. This screw has a flange 56 engaginga groovebetween the block 58 and acover plate '58 scthat turning the screweauses the block Etito be adjusted in and out to carry the doctor 'rolltoward or away from the pick-up roll it. contact with the up-goingside-of the doctor roll 24so as to keep said roll clean and'insure itspierfectcontrol of the quantity of material on the A scraper 59 isprovided on the blockBO for larger roll l8. The retention of theadjusted position of screw 52 is assured by a spring-pressed ratchet pin62. A stop screw 84 (Fig. 2) threaded in the block 5% and locked inposition therein. This limits the movement of the block 50 so as therebyto prevent the doctor roll 24 from' being forced into contact with theroll H8 in such a manner as to injure said rolls.

In the presentation of book covers to the coating rolls i2 and l 0arranged in series, they are laid upon a work table '10 mounted upon anadjustable bracket 12 held upon the machine by means of the hand screw74. On this bracket there is also mounted for in-and-out adjustment afence bracket 15 (Fig. 5) carrying a gage fence '18. This gage fenceoverhangs the margin A of the cover and is arranged to coact with theedges of the filler pieces F which are spaced from the outer edge of thebook cover but which, by being thicker and more rigid, provide a bettergaging surface than does the edge of the cover C which usually isflexible. The screw and slot mounting 85 (Fig. 1) provided forsupporting the fence'in adjusted position upon the bracket 16 allows thelower edge of the gage fence I8 to be brought close to the upper surfaceof the cover without contacting therewith and at such a height that thegage fence 18 will contact with the edges of the fillers F. Byin-and-out adjustment of the fence bracket '58 it is possible to adjustthe position of the gage fence '18 with respect to the edge of the coverC so as thereby to accommodate di iferent widths of the marginalportions A.

Successful coating and feeding of thefworkdepends to a substantialextent upon the proper I positioning of the presser rolls M and E6.Accordingly; the frame 32 has attached to its front face a hollow block82 which receives blocks 84 (Fig. 6) and 86 (Fig. 7) in which arejournaled the presser rolls I6 and M respectively. A slotted cover plate88 retains these blocks within the hollow block 82 and permits verticaladjustment of the presser rolls with the assurance that the axes of saidrolls will be kept in perfect parallelism with the corresponding coatingrolls I2 and iii. 'The positions of these blocks are determined. bysimilar mechanisms one of which is shown in section in Fig. 7andcomprising in each instance a screw 58 which is held fixed in' the block'8Ei by means of a pin 92. Surroundingthis screw is a spring 94 whichpresses against the under side of the block 86 to hold the presser rollresiliently against the Work. The degree of pressure provided by thisspring is determined by means of a sleeve 96 abutting the spring 94 andthreaded in the hollow block 82 and held in adjusted position by a setscrew 98. This sleeve 95 is provided with a knurled head I60 tofacilitate its adjustment. movement of the slidable block 86 the .boltis provided with .a stop nut I62 held in adjusted position'by a lock nut164. It will be seen thatthe arrangement just described provides forindependent adjustment of the limiting position of the presserrollandthe spring tension with which the presser roll 'is heldagainstthe Work. ,A like mechanism is provided for the block 84. It will beseen from Fig. 6 that the 'block 84 iscprovided with a dovetail E56.upon which the tablebracket 12 is secured. Asa result :the position ofthe upper surface of the table alwayscorresponds exactly with theposition of the upper surface of the presser roll 16.

.Assuming that the coacting applying and feeding rolls Ill-and l4 areincorrect relationito grip In order to limit the upward the margin ofthe filler piece F, it then becomes necessary to adjust the position ofthe auxiliary roll 5 2 to'coat the margin A of the thin cover stock C.To permit this adjustment, the mounting of the roll it comprises avertical plate iii] having a rib and groove connection H2 (Fig. 1) withthe frame 32. The back of this plate is slotted to receive the flangellfi upon an adjusting screw i it which is threaded in the frame therebyfacilitating the vertical adjustment of the auxiliary roll l2 so that itmay be brought into good contacting relation with the cover stock C.After the plate H!) has been adjusted it may be clamped in adjustedposition by means of a screw 1 53 passing through a slot in the plateinto the frame. The lower portion of the front face of the plate 9 l E!has an outwardly projecting rib E28 and coacting with this rib tosupport the roll is an angle block I22 which is secured to the plate iis by means of a bolt I24 passing through a slot in said angle block(Fig. 6). This slot is horizontal, in line with the top and bottom facesof the rib I29, and permits an axial adjustment of the auxiliary roll i2across the face of the primary roll it to cause the auxiliary roll tocoat the whole of margin A and to be positioned close to the edge of afiller piece F. It will be seen that the vertical adjustment of theauxiliary roll may have destroyed the spacing between that roll and 1eprimary roll it? and thus changed the quantity of coating material whichis removed by' the auxiliary roll and applied to the work. To restorethe correct relation between these two rolls, a bearing block #39 forthe auxiliary roll I2 is dovetailed in the lower face of the angle block1222 thereby to permit adjustment of this block H3!) in a horizontaldirection toward and away from the primary roll iii. A tight fit of thisbearing block H36 in the angle block ass is insured by a gib iZilpressed into position by means of locked screws 132. To facilitate theeasy adjustment of the bearing block exactly to the desired position, athumb screw 3 1 is provided which is threaded into said block and whichhas a ratchet I36 received in a groove l3? (Fig. l) in the lower face ofan overlapping plate i332 attached by screws to the front face of theangle block 622. This plate H8 is also drilled to receive aspring-pressed pin MB (Fig. 5) which bears against the ratchet E therebyto hold the screw H34 in adjusted position. The shaft for the auxiliaryroll 12 is provided with universal joints 39 as noted previously so thatit may be driven evenly and at the same speed in any position ofadjustment. If the auxiliary roll [2 moved faster than the primary rollit, the application of cement would not be uniform and the work wouldtend to wrinkle between the two.

It will be seen, therefore, that in the use of the machine the operatoris enabled to control the application of cement to the margins A and Bof the assembled cover and to cause it to be fed through the machinewithout rumpling or doubling. Assuming that he is starting the machinefor the first time on any particular lot of covers, he may find itnecessary to adjust the nuts M2 on the supports 8% and 85 for thepresser rolls it and Hi so as thereby to control the limiting positionsof said rolls to prevent contact with the coating rolls. Preferably therolls M and IE will be positioned at the same level to preventdistortion of the work. He may need also to adjust the tension of thesprings 5M by means of which these rolls are held against the work andthis can be done by turning the sleeves 96 by their heads wt and it willbe independent of the adjustment of the limiting position of theserolls. Adjustment of the auxiliary roll 52 across the face of theprimary roll to accommodate a particular width of margin A will beeffected by loosening the screw 524. He also may have to adjust theauxiliary roll l2 up and down by turning the screw M5 to cause it tocoact properly with the thin cover stock C and then he will adjust it bymeans of the screw i3 5 to cause just the correct amount of coatingmaterial to be applied and to get line contact with the roll it. Thework supporting table "iii which is carried by the block 8 3 for thepresser roll it will be at the correct height but it may be necessary toadjust the gage fence "58 in accordance with the width of the margin Aof the particular piece of work by loosening the screw it and also inaccordance with the thickness of the cover stock 0 by loosening thescrews in the slots 83. These adjustments made, he will control thequantity of latex delivered by the pick-up roll it, by turning the screw52 to adjust the doctor roll 26 and, guiding the work by means of thegage fence, will causethe coating rolls it? and 62 operating in seriesto coat the margin B of the filler stock and the margin A of thecover'stoclr, to the end that later the margin A may be folded over onthe margin B to provide a finished cover ready for application to abook.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is:

1. In a coating machine, at least two coating rolls arranged in seriesrelation to operate upon the same side of the work, means for supplyinga coating substance to one of said rolls and thence to another roll, oneof said rolls being mounted for adjustment across the face of the otherroll to vary its relation to the margin of the work to be coated, meansfor driving said rolls at the same peripheral speed, and means forvarying the distance between the axes of said rolls to control thequantity of material transferred therebetween and without varying thespeed of rotation of either roll.

2. In a coating machine, a pair of coating rolls arranged to operatesuccessively upon the same side of the work, means for supplying acoating substance to one of the rolls, the second roll receiving coatingsubstance from the first roll, a slidably mounted bearing for the secondroll, guiding means for said bearing permitting movement of the secondroll toward and away from the other roll in a direction substantiallynormal to the axis of the first roll thereby to control the transfer ofcoating material between the rolls, and means for driving said slidablymounted roll at the same speed in all positions of adjustment.

3. In a coating machine, a pair of coating rolls arranged to operatesuccessively upon the same side of the work, means for supplying acoating substance to one of the rolls, the second roll receiving coatingsubstance from the first roll, a slidably mounted bearing for the secondroll, means for adjusting said bearing to move the second roll towardand away from the other roll thereby to control the transfer of coatingmaterial between the rolls, means for adjusting said bearing to move thesecond roll axially across the face of the first roll thereby to varyits relation to the margin of the work to be coated, and means fordriving said slidably mounted roll at the same speed in all positions ofadjustment.

4. In a coatingmachine, coasting coating and presser rolls adapted togrip the work, means for drivingione of said rolls to feed the work, atable for supporting the work for delivery to said rolls, and a gagefence on said table overhanging a portionof the work and coac'ting witha characteristicfeature of the work spaced from the edge thereof to gagethework thereby.

5. In a machine for coating book covers provided with superposed fillerpieces spaced from an edge thereof, coacting coating and presser rollsfor gripping and feeding the work a table for supporting said work, anda gage fence mounted on said table to overhang a margin of the coversandtc coact with an edge of the filler pieces.

6. In a machine fo-rcoating'book covers provided with superposed filierpieces spaced from an edge thereof, coasting coating and presser rollsforvgripping and feeding the work, a table for supporting said work, anda gage fence mounted on said table to overhang a margin of the cover andto enact with the edge of the filler piece, said gage vfence beingadjustably mounted for movement toward and away from said table tocompensate for different thicknesses of covers.

'I. In a machine for coating book covers provided with superposed fillerpieces spaced from an edge thereof, coacting coating and presser rollsfor gripping and feeding the work, a table for supporting said work, anda gage fence mounted on said table to overhang a margin of the cover andto coact with an edge of the filler piece, said gage fencebeingadjustablyniounted transversely of said' table to coactwith fillerpieces which are spaced diiierently from the edges of the covers. v

8. In a machine for coating book covers provided with superposed fillerpieces"spaced froni means for drivingsaid rollsat the same peripheralspeed, a bearing for the second of. said rolls movably mounted foradjustment toward and away from the work support, said bearing beingalso mounted for adjustment substantially parallel to the wo fksupporttoward and away from the first roll, whereby the transfer .of coatingmaterial between therolls may be kept the same, and driving meansincluding connections for said second roll unaiiected'by said adjust.-

ments.

10. In a coating machine, a work support, a plurality of coating rollsarranged to operate in said support means ior supplying coating materialto one roll andfroin it to the second roll,

series upon the same side of a piece of work on said support, means forsupplying coating material to one roll and from it to the second roll,means for driving rolls at the same peripheral speed, and a bearing forthe second of said rolls movably mounted for' adjustment toward and awayfrom the workv support. and also mounted foradjustment axially acrosstheiwork area to be coated. I

' ARTHUR S. JOHNSON.

